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科学美国人60秒 SSS High Fiber Diet Keeps Intestinal Walls Intact

Your nose may be the first place you think of as a source of mucus. But mucus is a major player in your gut, too. There's antimicrobial peptides and proteins that are present in there. Bacteria live in there and forage on the carbohydrates. And it's

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DEVELOPMENT REPORT - Studies Say New Rotavirus Vaccines Are Safe and EffectiveBy Jill Moss Broadcast: Monday, January 16, 2006 I'm Steve Ember with the VOA Special English Development Report. Studies

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2006年慢速英语（一）月

TED演讲:我们为什么要排气(3)

At the same time, methanogens can use hydrogen and carbon dioxide produced by other bacteria to generate methane, 同时，产甲烷菌可以使用其他细菌产出的氢和二氧化碳以生成甲烷， which can reduce the total volume of gas by u

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TED演讲教育篇

2006年VOA标准英语-Cuban Exiles in Miami Hopeful Castro Illness Ma

By Lisa Ferdinando Miami 01 August 2006 A woman flies the Cuban flag from her vehicle as she drives in Miami's Little Havana neighborhood Tuesday Cuban exiles in Miami are celebrating the news that Cuban President Fidel Castro has temporarily handed

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2006年VOA标准英语（八月）

2006年VOA标准英语-Cuban Exiles Welcome US Call for Democracy in C

By Lisa Ferdinando Miami 05 August 2006 Cubans exiles in Miami are welcoming the Bush administration's latest call for democracy in Cuba. For the past two days, the Bush administration has released statements reaffirming its strong support for a dem

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2006年VOA标准英语（八月）

英语美文：最好的遗产是爱

你认为最好的遗产是什么呢？是金钱还是房产？看了本文你就会这个问题有进一步的理解。As a young man, Al was a skilled artist, a potter. He had a wife and two fine sons. One night, his oldest son developed a severe s

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affective individualism